Gauge cock



E. B. WADELL GAUGE' COG K Filed June 29, 1921 i Patented Oct. 7, 1924,

UNITED EDWARD B. WADELI., or wILLIAivIsoN, wrisr VIRGINIA, AssIsNoa or ONE-THIRD TO CARL B. EARLY, OF WILLIAMSON, WEST VIRGINIA, AND ONE-THIRD JEROME E. VERS-IE, OF `WILLIHVISN', WEST VIRGINIA.

GAUGE COCK.

Application filed .Tune 29, 1921. Serial No. 481,313.

To `all whom t may concern.'

Be it known that I, EDWARD B. WADELL, ahcitizen of the United States, residingl at Williamson, in the county of Mingo, State of West VVirginia, have invented certain new and `useful Improvements in Gauge Cocks; and 1 do hereby declare the following to be a full,I clear, Vand exact description of the invention, such as will enable others skilled in nthe art to which it appertains to make and use the same. Y

Thisv inventiondrelates to gauge cocks for steam boilers and it is an object of the invention to provide an improved structure including a main vvalve through the medium of which drain through the cock may be controlled and cut oit' and a supplemental valve that stands normally open and closes only when the main valve is backed excessive-ly from its seat as when it is to be removed alone or when the portions of the cock embodying the main valve and its seat are to be removed for regrinding.

It has been found in practice that in the use. of gauge cocks embodying such an arrangement of main control valve and supplemental emergency valve, the former being normally closed and the latter normally open when the boiler is in use, there is the usual collection of sediment in the inner end portion of the barrel of the gauge cock, that is difficult of removal while the gauge cock is in place, by reason of the presence of thel supplemental valve mechanism. It is an object of the present invention to so equip the supplemental valve that during the time oftrying' the gauge cock, the supplemental valve will be rotated and will not only bodily engage and move such accumulations as may be present but will so direct the water through the contracted inner end portion of the barrel or body of the cock as to cause `it to scour thoroughly the portion of the barrel or body subject to such accumulations. I am` aware that, 'as shown in4 United States Letters Patent No. 303,452 issued 12th of August, 1884, it has been proposed `to provide a portion only of a valve stem with helical wings for a short distance in front of the valyeso as to effect rotation of the valve when it is open so that vit will seat subsequently when released, with a ,rotaryv motion to effect a grinding action ofboth the valve and the seat. In the arrangement c in question, however, there is no intent to clean out sediment from the barrel of the gauge cock nor in fact does such an accumulation occur, for the reason that the valve thus equipped, stands normally closed and there is of course no deposit when the gauge cock is open.

In the drawings there is shown a sec tional perspective view of a gauge cock embodying the present invention. y

Referring to the drawings the barrel of the present gauge cock comprises an inner member 5 that is tubular and theI inner end portion of which is tapered, is of minor diameter and is eXteriorly threaded as shown at 6, the outer end portion of this inner member 5 including an eXtreme enlarged terminal portion 7 that is preferably formed angularly to receive a wrench and an adjacent cylindrical portion 8of a diameter intermediate those of the portions 6 and 8.

The body member 5 has a bore that in cludes the inner end portion 9 that is cylindrical and of minor diameter, the outer end portion 10 that is threaded and is of major diameter and the intermediate portion 11 of intermediate diameter. the intermediate bore portion 11 is curvingly tapered to the bore portion 9 as shown at 12 while the inner end ofthe bore portion 10 terminates at the abrupt shoulder 18 at its inner end. y

The barrel of the gauge cock includes also an intermediate member 14 the end portions of which are cylindrical, are reduced and are threaded as shown at 15 and 16 respectively, the end portion 16 being screwed into the major end. portion 7 of the inner barrel member 5. Upon the outer end portion 15 of the intermediate barrel member is screwed the enlarged inner end of a cap 17 that constitutes the outer member of the barrel, the outer end portion of this outer member being reduced and tapered as shown at 18 and through this outer body member is. formed an axial bore including, the major inner end portion 19 that is threaded and The inner end of 21 of intermediate diameter that is smooth.

The intermediate body portion 14. has an axial bore that includes a central enlarged chamber from which extends a portion 22 of reduced diameter through the outer extremity of the member as shown at 22. At the inner end of the bore portion or chamber 2l is a frusto-conical taper 23 that forms the main valve seat and from the minor end of this taper there extends the portion of the bore of minor diameter 24 that leads to the inner end bore portion 25 which in the embodiment of the invention illustrated, is the same diameter as the portion 21 that constitutes the central chamber.

ln connection with the valve seat 23 there is employed a main control valve comprising a head 26 having a frusto-conical end portion 27 that constitutes the valve face that moves into and out of engagement with the seat 22 to close and open the cock so that flow may be through the inner barrel member 5 to the chamber 21 and thence by way of t-he nipple 28 outwardly of the body of the cock.

The valve head 26 has a slightly enlarged cylindrical stem 29 that is rotatively fitted in the bore portion 22 of the intermediate body member 14 and also within the bore portion 21 of the outer member 13 of the cock body, beyond which bore 21 the stem is reduced and threaded as shown at 29 and is engaged with the threads of the minor bore portion 20 of the body member' 17. Beyond these threads, the stem is further reduced and is provided with a hand wheel 30. It will thus be seen that by oscillation of the hand wheel, the valve face 27 will be moved into and out of the seat 23.

lt is of course understood that in practice the body member 5 is screwed into the boiler or water column as the case may be and that. when it is desired to grind the valve into its seat, the intermediate body member 14 may be unscrewed from the inner body member 5. lt will also be understood that before this is done, the inner end of the body member' 5 must be closed against egress of steam or water from the boiler, if the operation is to be performed without killing the boiler. For this purpose, a supplemental valve 31 is provided, having a frusto-conical face 32 for engagement with the taperinglyf countersunken free end por tion of the inner end bore portion 9 of the inner body member 5. This face consti.- tutes a seat for the valve face 32. The valve 31 is provided with a stem that passes entirely through the bore portion 9 and Well into the bore portion 11, this stem being twisted so as to provide a pair of helical wings that progress longitudinally of and about the inward extension of the axis of the valve, such wings being shown at 34 and 35 respectively. The wings have such radial extension as to jointly approximate the diitinere ameter of the bore portion 9 so as to not only guide the valve to its seat, but to have an auger like scraping action against the wall of the bore portion, thus to rid it of any accumulations thereon.

To hold the valve 31 against excessive outward movement while permitting such .longitudinal movement as will enable it to travel into and out of its seat, the inner extremity of the valve stem is formed cylindrical and is threaded as shown at 36 and is screwed into one end of a bushing 37 that is rotatively and slidingly mounted in a cylindrical sleeve 33 that is sustained within the bore portion 11 of the body member 5, by means of a suitablel number of radiating webs 39. The bushing 37 has a circumscribing flange 40 that is spaced outwardly from i the sleeve 33 when the valve 31 is in its seat and which contacts with the sleeve when the valve moves out of its seat and to its limit of such movement. s

llVith the construction thus far described, it is apparent that the boiler pressure would serve to hold the valve 31 to its seat.y Such is the intention when the main control valve with the intermediate and outer body ment bers are disconnected from the inner body member 5 but during the times when the main'valve is closed or is cracked to try out, the supplemental or emergency valve 31 is to be held open. For this purpose, the valve head 26 has a reduced and cylindrical, axial extension 41 beyond the Valve face 2T, that passes into the bushing 37 and engages its tapered extremity against the reduced and threaded outer end portion 36 of the stem of the valve 31. The length of this extension l1 is such that when the valve face 27 is firmly in contact with the valve seat 23, the face 32 of the valve 31 will be held well away from the valve seat 33 and when the main control valve 26 is backed to that degree suflicient to try out the valve 31 will still be suflieiently far out from its seat to permit ready flow past it.

VYhcn the cock is thus opened, it will be understood that the water or steam, as the case may be, will pass from the boiler and striking the wings34 and 35 will cause a spinning of the auger like valve stem so that sediment will be loosened from the wall of the bore portion 9 as well as from the stem itself, while the circuitous path given the Huid will impart a scouring action so that the entire portion of the bore that is occupied by the valve stem will be automatically cleansed. lt will of course beseen that when the outer members of the cock body are removed, the enlarged bore portion 11 isreadily accessible, but the iuid is thrown violently against the wall of such bore portion by centrifugal action and with a whirling motion so that it is likewise thoroughly scouredn What is claimed is: f

l. A gauge cock comprising a plurality of detachably connected sections having aligned bores therethrough, a main control valve and a supplemental valve positioned Within the bores, a cylindrical sleeve supported within one of the sections, a bushing rotatably mounted in said sleeve and threadedly receiving one end of the said supplemental valve, the said bushing being provided at its outer edge with a circumscribing flange for engaging said sleeve to prevent tool great outward movement of the said supplemental valve. l

2. The combination With a gauge cock composed of a plurality of detachab-ly con.

nected sections having aligned bores therethrough and having a main control valve and a supplemental valve, of means for detachably maintaining the said supplemental valve in proper position, said means comprising a cylindrical sleeve supported Within the bore of one of the sections, anda bushing rotatably mounted Within the said sleeve, the said bushing being formed with' internal threads to receive the externally threaded end portion of the said supplemental valve. y

In testimony whereof,` I aix my signa# ture, in the presence of tWo Witnesses.

EDWARD B. WADELL. Vitnesses:

A. E. MoCoMAs, l K. C. SHELTON. 

